Superb description. The suspension under these conditions feels as if it is trying to solve a problem it does not know how to address - and guesses until something works.

I wish BMW had gone with the vastly superior magnetic ride control found on General Motors cars (introduced ten years ago on a Cadillac) and now on Corvette, Ferrari, and Audi and others. It is much quicker, more planted, more responsive, linear.

Hopefully BMW can get up to speed.

They probably won't... that leaves the door wide open for aftermarket magnetic shocks... already available on beemers.